Bruce K. Vaughen, Ph.D., P.E., CCPSC, is the Lead Process Safety Subject Matter Expert at the Center for Chemical Process Safety (CCPS), a Technology Alliance in the American Institute of Chemical Engineers (AIChE). He has more than two and a half decades of process safety experience, including engineering, research, teaching, and consulting experiences in DuPont, DuPont Teijin Films, Cabot Corporation, and BakerRisk, and as a visiting assistant professor at Rose-Hulman Institute of Technology, Terre Haute, Indiana. His roles have included leading global Process Safety Management (PSM) efforts, updating and developing corporate PSM standards, and developing PSM training and workshops. He is a co-author with James A. Klein for the book Process Safety: Key Concepts and Practical Approaches (CRCPress 2017), and is the principal author of two CCPS guideline books (Siting and Layout of Facilities (Wiley, 2018); Integrating Management Systems and Metrics to Improve Process Safety Performance (Wiley, 2016)), and has developed training modules for AIChE’s Safety and Chemical Engineering Education (SAChE) committee. He holds a BS degree in chemical engineering from the University of Michigan, Ann Arbor, Michigan, MS and PhD degrees in chemical engineering from Vanderbilt University, Nashville, Tennessee, and is a registered professional engineer.